Triple_A_Math

There are 15 marbles in a bag; 7 of them are red, the other 8 are not red. 4 marbles are drawn WITHOUT replacement. What is the probability that you'll draw: 1) 0 red 2) 1 red 3) 2 red 4) 3 red 5) 4 red Thanks in advance for any help :)

I need to write a function that can determine if each word in a given string contains a vowel. If each word contains a vowel, the function shall return true, if not, the function shall return false. My prefered language is C++, but if you want to explain...

200 computers are built in a factory. They have a 0.5% defective rate. What is the probability that the first defective item is within the first 10 items tested?

For the trig equation: 2sin(x)tan(x) = tan(x), Why can't I just divide both sides by tan(x) and be left to solve only 2sin(x)=1?

Just out of curiosity, what is everyone's favorite/coolest math formula?

A man with a quadratically shaped head, with profile given by the function h(x)=4-3x^2 where both x and h(x) are measured in decimetres, puts on a conical hat whose profile has a right angle at the tip. How much taller does he appear with the hat on if he...

Awesome. Thanks so much for your help! It's funny actually, because I had the same logic, same numbers, but I realized I made a silly calculator error!

Okay thanks! Makes sense now

Update: Problem solved... I found the answer :D

Thanks so much for the help everyone! This practice problem was just a little beyond my grasp so it was nice to see it explained :)

area of sphere = 4 * pi * r^2 diameter = 2 * radius, so radius = diameter / 2 Can you find the radius from here and sub it into the area formula?